A Global Navigation Satellite System (GNSS) receiver includes a wideband signal correlator and a multipath mitigator. The wideband signal correlator generates wideband correlation signals of at least one of a plurality of GNSS signals with respect to corresponding locally generated code replica signals in which a bandwidth of the wideband signal correlation module is at least about 20 MHz. The multipath mitigator determines a Line of Sight (LOS) signal from the wideband correlation signals. The GNNS receiver may include a narrowband signal correlator to generate narrowband correlation signals of the at least one GNSS signal with respect to corresponding locally generated code replica signals in which a bandwidth of the narrowband signal correlation module is less than about 6 MHz. The multipath mitigator further corrects a range and range-rate measurement generated from the narrowband correlation signals based on a code phase and a carrier estimated based on the LOS signal.
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2. The receiver of claim 1, wherein the multipath-mitigation module further corrects the range and range-rate measurement generated from the narrowband correlation signal based on a code phase and a carrier estimated based on the LOS signal component.
3. The receiver of claim 1, wherein the GNSS signal comprises a Global Positioning System (GPS) L1 Coarse/Acquisition (C/A) code signal.
5. The receiver of claim 1, wherein the multipath-mitigation module determines the LOS signal component based on an earliest-in-time signal component based on the wideband correlation signal.
9. The GNSS receiver of claim 8, wherein the multipath-mitigation module further estimates a code phase and a carrier based on the LOS signal component; and generates the range and range-rate measurement based on the estimated code phase and the estimated carrier.
11. The GNSS receiver of claim 8, wherein the wideband signal comprises a bandwidth of 20 MHz, and the narrowband correlation signal comprises a bandwidth of less than 6 MHz.
12. The GNSS receiver of claim 8, wherein the GNSS signal comprises a Global Positioning System (GPS) L1 Coarse/Acquisition (C/A) code signal.
13. The GNSS receiver of claim 8, wherein the multipath-mitigation module determines the LOS signal component based on an earliest-in-time signal component based on the wideband correlation signal.
17. The receiver of claim 16, wherein the multipath-mitigation module is further coupled to the narrowband signal path, the multipath-mitigation module further determining the range and range-rate measurement from the narrowband correlated signal, and correcting the range and range-rate measurement generated from the narrowband correlated signal based a code phase and a carrier estimated from the LOS signal component.
18. The receiver of claim 16, wherein the GNSS signal comprises a Global Positioning System (GPS) L1 Coarse/Acquisition (C/A) code signal.
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August 12, 2020
April 2, 2024
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